[modeleng] Re: http://www.keveney.com/Atkinson.html
- From: "TEL" <tel47@xxxxxxxxxxx>
- To: <modeleng@xxxxxxxxxxxxx>
- Date: Mon, 19 Nov 2007 17:25:06 +1100
I thought Newcomen held the patent at the time?
> Jesse
>
> A man called Pickard patented the crank. James Watt designed the
> complicated sun-and-planet motion to circumvent this patent. It is
> extraordinary that someone was able to patent the principle of the crank,
> which had been in use for millennia!
>
> Watt must have been the original model engineer - he tested his theory of
a
> separate condenser on a scale model, before making the huge engine.
>
> Cheers from Hubert in FREEZING St Albans.
>
> ----- Original Message -----
> From: "Jesse Livingston" <fernj1@xxxxxxxxxxxxx>
> To: <modeleng@xxxxxxxxxxxxx>
> Sent: Sunday, November 18, 2007 3:30 PM
> Subject: [modeleng] Re: http://www.keveney.com/Atkinson.html
>
>
> > Dave,
> >
> > You are correct, it is the Differential engine I was thinking about.
> >
> > Another attempt at circumventing patents was the "Epicyclical" steam
> > engine.
> > This was invented, I believe to get around Watts' patent on the
crankshaft
> > and connecting rod. I have a model here at the house that our son built
a
> > few years ago. Runs quite well, but looks weird as all get out.
> >
> > Jesse in too warm for November W Tennessee USA.
> >
> > MODEL ENGINEERING DISCUSSION LIST.
> >
> > To UNSUBSCRIBE from this list, send a blank email to,
> > modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the
subject
> > line.
>
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